Brake cooling means



May 24, 1932- w. D. MCINTYRE ET AL 1,859,709

BRAKE COOLING MEANS Filed June 11, 1931 2 Sheets-Sheet l W J). M K7306J5 01764 5 gw wdm A llorncy M y 1932- w. D. MCINTYRE ET AL 1,859,709

BRAKE COOLING MEANS Filed June 11, 1931 2 Sheets-Sheet 2 v I-Illllllll lLIT;

41:: iii

Inventors A Home y Patented May 24, 1932 UNITED STATES WILLIAM D.MCINTYRE AND JOSEPH DANCIGER, OF AMARILLO, TEXAS BRAKE COOLING MEANSApplication filed June 11, 1931.

' particularly the apparatus employed in drilling Wells.

As a general rule, the bull wheel is a huge wooden or wooden faced wheelwhich is associated with a cable drum employed for lowering and drawingequipment and tools into and out of wells. It is customary to associatewith this bull wheel a brake band and operating means therefor so thatthe rate of speed of the unreeling and reeling of the cable may beregulated to some extent, or stopped when desired.

The application of the brake band however around the periphery of thewheel develops considerable friction, setting the wheel afire, ordamaging it by charred burns. Va-

ious make-shift means have been employed for attempting to cool orlubricate the wheel to some extent by applying oil or water to thewheel, but due to the rapid rotation of the wheel, these cooling agentsare thrown off in a centrifugal manner, and thereby are not effective.

The purpose ofthe present invention is to build into the wheelconstruction and hub, means for circulating oil or some other coolingmedium radially and by centrifugal force or from the hub to thepreiphery where said medium is applied to the braking surface with aView toward minimizing fire hazards.

The particular arrangement which weemploy will become more apparent fromthe following description and drawings.

In the drawings: 7

Figure 1 is an elevational view showing the invention incorporated in abull wheel.

Figure 2 is a View at right angles with a portion of the frame brokenaway and shown in section. i

Figure 3 is a detail view through the felly or periphery of the wheel,

Serial No. 543,686.

Figure 4: is a fragmentary detail sectional and V elevational viewshowing the cooling medium reservoir.

In the drawings, in'Figure 2 for example, the numeral 5 designates abase and 6 a supporting frame for the drum or Windlass in general. TheWindlass includes the customary rotary axle or shaft 7 the wooden bullwheel 8 and the brake band 9. The brake band has its movable end portion10 attached to a rocker lever '11 mounted on the base 5 for applying andreleasing the brakes;

In accordance with my invention, the extended end portion or hub 12 ishollowed out to provide a chamber 13 which functions as a reservoir forcontaining the cooling medium 14. The numeral 15 designates the stuffingbox with which the right angular feed pipe 16 is connected. .On theintake end of this pipe is a funnel 17. The rim or periphery 18 of thewheel is formed with circmnferentially spaced socket 19 with whichdelivery pipes 20 are connected. These delivery pipes are in turnconnected with the reservoir 13 and are designed to conduct the coolingmedium it from the reservoir into the pockets or sockets 19 bycentrifugal action.

It is thus evident that the reservoir is filled by way of the feed pipe16 and any suitable cooling medium such as water or oil may be employedfor the purpose. As the bull wheel is rotated, this cooling medium 14.is delivered by way of the multiplicity of pipes 2 1 to the pockets 19where it merges and accumulates between the periphery of the wheel rimand theinner surface of the brake band 9.

This action is sufficient, it is believed, to provide the desiredcooling action tomaintain efficient braking power and at the same timeto minimize destruction by the development of undue friction andresultant burning of the wood surface. 7

The gist of the idea, is in providing either the hub or the shaft with areservoir, provid ing suitable. means for supplying a cooling medium,and delivery pipes or equivalent elements for conveying the coolingmedium to the periphery of the wheel to reduce fire hazards when thebraking action is extreme as the result of forcible tightening of thebrake band around the bull wheel.

It is thought that the description, taken in connection with thedrawings will enable a clear understanding of the invention to be had.Therefore, a more lengthy description is thought unnecessary.

While the preferred embodiment of the invention has been shown anddescribed, it is to be understood that minor changes in shape, size,materials, and rearrangement of parts coming within the field ofinvention claimed may be resorted to in actual practice if de sired.

We claim:

In a structure of the class described, in 'combination, a base, abearing equipped frame mounted on said base, a shaft journalled forrotation in the adjacent bearing, said shaft being provided with ahollow portion constituting an oil containing reservoir, a stufling boXassociated with said reservoir, an oil feed pipe connected with saidstufling box and in communication with said reservoir, a bull wheelmounted on said shaft, the periphery thereof being provided withcircumferentially spaced pockets, delivery pipes connected with thereservoir and pockets, and a brake band embracing said bull wheel andmounted on said base. 7

In testimony whereof we aflix our signa tures.

WILLIAM D. MOINTYRE. JOSEPH DANCIGER.

